Operation CHARM: Car repair manuals for everyone.
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)

Or, hide this message: temporarily or permanently

KT8 - Check Vacuum to Both IMRC Valves



- Key "OFF".

- Check the vacuum hose from the front and rear Intake Manifold Runner Control System (IMRC) valves to the IMRC solenoid. Inspect for holes, kinks, disconnections and blockages.

- Are vacuum hoses OK?

Yes -- Go to KT9. KT9 - Enter Output State Check Diagnostic Test Mode (DTM)

No -- Service vacuum hose(s) as necessary. Rerun quick test. Quick Test Appendix (Detailed Testing Instructions)